/* $NetBSD: endian.h,v 1.10 1998/08/08 11:18:32 ragge Exp $ */ /* * Copyright (c) 1987, 1991 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)endian.h 7.8 (Berkeley) 4/3/91 */ #ifndef _VAX_ENDIAN_H_ #define _VAX_ENDIAN_H_ #define _QUAD_HIGHWORD 1 #define _QUAD_LOWWORD 0 #ifndef _POSIX_SOURCE /* * Definitions for byte order, according to byte significance from low * address to high. */ #define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */ #define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */ #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */ #define BYTE_ORDER LITTLE_ENDIAN #include typedef u_int32_t in_addr_t; typedef u_int16_t in_port_t; __BEGIN_DECLS in_addr_t htonl __P((in_addr_t)); in_port_t htons __P((in_port_t)); in_addr_t ntohl __P((in_addr_t)); in_port_t ntohs __P((in_port_t)); u_int16_t bswap16 __P((u_int16_t)); u_int32_t bswap32 __P((u_int32_t)); u_int64_t bswap64 __P((u_int64_t)); __END_DECLS #ifdef __GNUC__ #define __byte_swap_long_variable(x) \ ({ register u_int32_t __y, __x = (x); \ \ __asm ("rotl $-8, %1, %0; \ insv %0, $16, $8, %0; \ rotl $8, %1, r1; \ movb r1, %0" \ : "&=r" (__y) \ : "r" (__x) \ : "r1", "cc" ); \ __y; }) #define __byte_swap_word_variable(x) \ ({ register u_int16_t __y, __x = (x); \ \ __asm ("insv %1,$16,$8,%1; \ ashl $-8,%1,%0" \ : "&=r" (__y) \ : "r" (__x) \ : "cc" ); \ __y; }) #define __byte_swap_long(x) __byte_swap_long_variable(x) #define __byte_swap_word(x) __byte_swap_word_variable(x) #define ntohl(x) __byte_swap_long(x) #define ntohs(x) __byte_swap_word(x) #define htonl(x) __byte_swap_long(x) #define htons(x) __byte_swap_word(x) #define bswap16(x) __byte_swap_word(x) #define bswap32(x) __byte_swap_long(x) #endif /* __GNUC__ */ /* * Macros for network/external number representation conversion. */ #define NTOHL(x) (x) = ntohl((in_addr_t)(x)) #define NTOHS(x) (x) = ntohs((in_port_t)(x)) #define HTONL(x) (x) = htonl((in_addr_t)(x)) #define HTONS(x) (x) = htons((in_port_t)(x)) #endif /* _POSIX_SOURCE */ #endif /* _VAX_ENDIAN_H_ */